Operating system and method for controlling laser output

Abstract

The invention discloses an operating system for controlling laser output, which comprises a laser device, and the laser device comprises a working part, a control circuit of the working part and a cooling water path, the cooling water path comprises a circulating water pipeline communicated with the working part of the laser, and cooling water of the circulating water pipeline exchanges heat with the working part of the laser; the water tank is communicated with the circulating water pipeline, cooling water is arranged in the water tank, and the water tank is provided with a water adding port capable of being opened and closed; the water pump is arranged in the circulating water pipeline and is used for forming circulating water power of cooling water in the circulating water pipeline; the red copper radiator is an air-cooled radiator, is communicated with the circulating water pipeline and is used for carrying out heat dissipation treatment on the cooling water; and the refrigerating machine is communicated with the circulating water pipeline and is used for refrigerating the cooling water. By adopting the scheme, the temperature of the cooling water is convenient to control, heat dissipation treatment of the laser is facilitated, and the temperature of the laser is kept in a stable state.

Description

Technical Field

[0001] This invention relates to the field of picosecond laser technology, specifically to an operating system and method for controlling laser output. Background Technology

[0002] Picosecond lasers are lasers with pulse widths in the picosecond range. They have advantages such as high accuracy, fast recovery, and minimal damage. The lasers that generate picosecond lasers are widely used in dermatology for cosmetic procedures such as skin whitening and freckle removal, tattoo removal, facial wrinkle removal, skin rejuvenation, acne treatment, scar treatment, and photoaging treatment.

[0003] Picosecond laser seed sources, as a major component of laser equipment, are typically used to generate high-intensity laser pulses for extremely short periods of time. The main function of these high-intensity laser pulses is to serve as seed sources for other laser systems, enabling the generation of more powerful and shorter laser pulses.

[0004] Temperature is a crucial factor affecting the output laser parameters of a seed source, and considering the impact of temperature on laser output has become an important direction for improvement.

[0005] A prior art Chinese patent application, publication number CN119581977A, discloses a drive control system and method for a picosecond laser seed source. The system includes a temperature sensor that detects the Peltier temperature status signal in real time; a Peltier control and adjustment circuit that adjusts the drive power of the Peltier drive circuit according to the target temperature using a PID dynamic adjustment method; and a seed source control and adjustment circuit that determines whether the temperature status signal meets the seed source's operating conditions. The seed source output feedback circuit feeds back the drive current signal to the seed source control and adjustment circuit in real time and integrates the target drive current signal and the output drive current signal to control the seed source drive circuit. This solution, through precise real-time dynamic adjustment of the seed source's operating environment temperature and setting of the operating delay, ensures that parameters such as the uniformity of the output electrical pulse waveform are adapted to the requirements of laser equipment during high-frequency operation.

[0006] Existing technologies only achieve precise and real-time dynamic adjustment of the seed source's operating environment temperature through circuit improvements. However, considering the complexity, cost, and reliability of circuit design, as well as the issue of wire aging, it is still necessary to consider how to maintain the laser's temperature stability. Summary of the Invention

[0007] The purpose of this invention is to provide an operating system and method for controlling laser output in order to keep the temperature of the laser in a stable state.

[0008] The objective of this invention is achieved as follows: an operating system for controlling laser output, comprising a laser, the laser including a working part and its control circuit, and also including a cooling water circuit;

[0009] The cooling water circuit includes:

[0010] A circulating water pipeline connected to the working part of the laser, wherein the cooling water in the circulating water pipeline exchanges heat with the working part of the laser;

[0011] A water tank connected to a circulating water pipeline, the water tank containing cooling water, and the water tank having an openable and closable water inlet port;

[0012] A water pump installed in a circulating water pipeline is used to generate the circulating water power for cooling water in the circulating water pipeline.

[0013] A copper radiator, designed as an air-cooled radiator, is connected to the circulating water pipeline and is used to dissipate heat from the cooling water.

[0014] A refrigeration unit, which is connected to the circulating water pipeline, is used to refrigerate the cooling water.

[0015] Furthermore, the cooling water circuit also includes a filter connected to the circulating water pipeline for filtering impurities in the cooling water.

[0016] Furthermore, the filter is removable.

[0017] Furthermore, the control circuit includes a display screen and a main control board electrically connected to the display screen. The circulating water pipeline is equipped with a flow sensor for monitoring water flow and a water temperature sensor for monitoring cooling water temperature. Both the flow sensor and the water temperature sensor are electrically connected to the main control board so that the display screen can show the real-time temperature and flow rate of the cooling water.

[0018] Furthermore, the laser working part includes a sealed housing, and an optical path adjustment unit, a seed laser unit and a focusing cavity component installed inside the housing. The housing has an inlet end and an outlet end connected to the circulating water pipeline. A temperature sensor is provided inside the housing of the laser working part, and the temperature sensor is electrically connected to the main control board.

[0019] Furthermore, the working part of the laser is set as the upper structure of the laser, and the control circuit and cooling water circuit are set as the lower structure of the laser, with the upper structure and the lower structure of the laser being separated from each other.

[0020] As another aspect of the present invention, an operating method based on the above-described operating system is proposed, comprising the following steps:

[0021] S1. When the equipment is turned on, the control circuit is initialized, and the cooling water circuit is started at the same time. The water pump, copper radiator and chiller work at the same time to make the cooling water flow in the circulating water pipeline.

[0022] S2. When the laser is working, the internal temperature of the laser rises. The heat is removed by heat exchange between the flowing cooling water and the heat-generating elements of the laser, so that the temperature of the focusing cavity component is maintained at 25°C, thus maintaining the high working efficiency of the laser.

[0023] When the water temperature sensor detects that the cooling water temperature is higher than 27°C, the copper radiator is in the heat dissipation state.

[0024] When the water temperature sensor detects that the cooling water temperature is higher than 25°C, the chiller is started to cool the cooling water and lower its temperature.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. A cooling water circuit is configured for the laser. A water pump is used to circulate the cooling water in the circulating water pipeline to remove the heat generated by the laser during operation. A copper heat sink is used to dissipate heat from the cooling water. Combined with a chiller, the temperature of the cooling water is controlled, which is beneficial to the heat dissipation of the laser and keeps the laser temperature in a stable state, thereby fully ensuring the working efficiency of the laser.

[0027] 2. Because of the water temperature sensor, temperature sensor and flow sensor, a stable temperature control mechanism can be formed, which can better control the start-up of the copper radiator and the chiller, and also control the output of the water pump (regulate the flow rate of cooling water), and further control the working temperature of the laser.

[0028] 3. The working part of the laser is set as the upper structure of the laser, and the control circuit and cooling water circuit are set as the lower structure of the laser. The upper and lower structures of the laser are separated from each other, which can avoid the impact of wire aging on the optical path system. Attached Figure Description

[0029] Figure 1 This is a cooling water circuit layout diagram of the present invention.

[0030] Figure 2 This is a control circuit layout diagram of the present invention.

[0031] Figure labeling: 1-Laser, 1a-Optical path adjustment unit, 1b-Seed laser unit, 1c-Focusing cavity component, 2-Water tank, 3-Filter, 4-Water pump, 5-Copper radiator, 6-Refrigeration unit, 7-Circulating water pipeline, 8-Display screen, 9-Main control board, 10-Power supply, 11-Capacitor. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1-2 As shown, an operating system for controlling laser output is proposed, including a laser 1, which includes a working part and its control circuit, as well as a cooling water circuit.

[0034] The above cooling water circuit includes:

[0035] The circulating water pipeline 7 is connected to the working part of the laser 1, and the cooling water in the circulating water pipeline 7 exchanges heat with the working part of the laser 1.

[0036] Water tank 2 is connected to the circulating water pipeline 7. Water tank 2 contains cooling water and has an openable and closable water filling port.

[0037] The water pump 4 installed in the circulating water pipeline 7 is a variable frequency water pump. The water pump 4 is used to generate the circulating water power of the cooling water in the circulating water pipeline 7.

[0038] The copper radiator 5 is a wind-cooled radiator connected to the circulating water pipeline 7 and is used to dissipate heat from the cooling water.

[0039] The chiller 6 is connected to the circulating water pipeline 7 and is used to cool the cooling water.

[0040] Filter 3 is connected to the circulating water pipeline 7 and is used to filter impurities in the cooling water. Filter 3 is removable for easy replacement.

[0041] The control circuit includes a display screen 8 and a main control board 9 that is electrically connected to the display screen 8. A flow sensor for monitoring water flow and a water temperature sensor for monitoring cooling water temperature are installed in the circulating water pipeline 7. Both the flow sensor and the water temperature sensor are electrically connected to the main control board 9 so that the display screen 8 can display the real-time temperature and flow rate of the cooling water.

[0042] As a necessary design element, the control circuit also includes a power supply 10 and a capacitor 11.

[0043] The working part of the laser 1 includes a sealed housing, and an optical path adjustment unit 1a, a seed laser unit 1b and a focusing cavity component 1c installed inside the housing. The housing has an inlet end and an outlet end that are connected to the circulating water pipeline 7. A temperature sensor is provided inside the housing of the working part of the laser 1, and the temperature sensor is electrically connected to the main control board 9.

[0044] The working part of the laser 1 is set as the upper structure of the laser 1, and the control circuit and cooling water circuit are set as the lower structure of the laser 1. The upper structure and the lower structure of the laser 1 are separated from each other, which can avoid the impact of wire aging on the optical path system.

[0045] The technical specifications of the operating system for controlling laser output described above are as follows:

[0046] The cooling water circuit primarily maintains the temperature of laser 1, ensuring the lamp's discharge is in its most stable state and thus guaranteeing stable light output. In the entire circuit, filter 3 maintains the cleanliness of the circulating water; insufficient cleanliness reduces the system's efficiency. The copper radiator 5 keeps the temperature below room temperature and operates continuously. When the temperature exceeds 27°C, its turbine fan activates. The TEC chiller 6 cools the water; when the cooling water temperature is too high, a temperature sensor triggers the chiller 6 to lower the temperature to 25°C, maintaining laser 1 at its optimal operating temperature. The flow sensor monitors the water flow rate; when the flow rate is less than 2L / min, a prompt appears on display 8, reminding the user to add water. The entire water circulation system starts upon equipment startup, and chiller 6 begins operation when the temperature reaches 25°C. The entire cooling system aims to maintain a constant temperature for the xenon lamp and laser rod, ensuring laser stability.

[0047] Based on the aforementioned operating system for controlling laser output, an operating method is provided, comprising the following steps:

[0048] S1. The equipment is turned on, the control circuit is initialized, and the cooling water circuit is started at the same time. The water pump 4, the copper radiator 5 and the chiller 6 work at the same time to make the cooling water flow in the circulating water pipeline 7.

[0049] S2. When laser 1 is working, the internal temperature of laser 1 rises. Most of the input energy of laser 1 is released in the form of heat energy, which will cause the temperature inside the focusing cavity to rise, affecting the life of xenon lamp and the stable operation of laser rod. At this time, flowing cooling water is used to exchange heat with the heating element of laser 1 to remove heat, so that the temperature of focusing cavity component 1c is maintained at 25°C, and the laser 1 maintains a high working efficiency.

[0050] Specifically, when the water temperature sensor detects that the cooling water temperature is higher than 27°C, the copper radiator 5 is activated for heat dissipation. The temperature sensor inside the housing of the laser 1's working part is used to monitor whether the laser 1's operating temperature is overloaded, so as to increase the output power of the water pump 4, accelerate the flow of cooling water, speed up the cooling process of the laser 1, and further ensure the working stability of the laser 1.

[0051] When the water temperature sensor detects that the cooling water temperature is higher than 25°C, the chiller 6 is started to cool the cooling water and lower its temperature.

[0052] As an application example, when laser 1 is working, clicking the "stand by" button on the display screen initiates pre-ignition of the xenon lamp using the pre-ignition circuit. High-voltage electricity is directly applied across the xenon lamp, completely ionizing the xenon gas inside. Simultaneously, a sustaining voltage of approximately 100V is applied to illuminate the xenon lamp. The power supply charges the energy storage capacitor. The foot pedal, connected to the main control board, sends a discharge signal when pressed, rapidly releasing the high-voltage energy from the capacitor to the xenon lamp, applying a 300V-500V voltage. This high voltage and current cause the xenon lamp to emit strong light, exciting the laser rod and producing high-energy output. The foot pedal also directly controls the power supply to the seed via the main control board, exciting the seed to emit a picosecond laser with weak energy. The picosecond laser passes through a series of isolators and lenses (optical path system) before reaching the focusing cavity device (composed of the xenon lamp and laser rod). Combined with a quarter-wave plate and a total reflection mirror, the laser energy is amplified three times. The display screen serves as the human-computer interaction window, allowing users to input wavelength, frequency, and energy within a specified range. Energy regulation is mainly achieved by controlling the capacitor discharge time and the voltage across the lamp tube with electrical signals. Stability is maintained by the energy feedback circuit. Wavelength changes are mainly achieved by the frequency multiplier and hand switch. Frequency is mainly achieved by the main control board sending a signal to the seed control board to trigger the seed laser of the corresponding frequency, which is then combined with the amplified energy output laser of the same frequency.

[0053] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In this invention, it should also be noted that the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through intermediate connecting parts. The specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An operating system for controlling the output of a laser, comprising a laser (1) which comprises a working part and a control circuit therefor, characterized in that, Further comprising a cooling water circuit; The cooling water circuit comprises: A circulating water pipeline (7) connected with the working part of the laser (1), the cooling water of the circulating water pipeline (7) exchanges heat with the working part of the laser (1); A water tank (2) connected in the circulating water pipeline (7), the water tank (2) is internally provided with cooling water, and the water tank (2) is provided with an openable and closable water adding port; A water pump (4) arranged in the circulating water pipeline (7), the water pump (4) is used to form the circulating water power of the cooling water in the circulating water pipeline (7); A red copper radiator (5) arranged in the circulating water pipeline (7), the red copper radiator (5) is used to radiate the cooling water; A refrigerator (6) connected in the circulating water pipeline (7), the refrigerator (6) is used to refrigerate the cooling water.

2. An operating system for controlling the output of a laser according to claim 1, wherein, The cooling water circuit further comprises a filter (3) connected in the circulating water pipeline (7), the filter (3) is used to filter the impurities in the cooling water.

3. An operating system for controlling the output of a laser according to claim 2, wherein, The filter (3) is detachably arranged.

4. The system for controlling operation of a laser output according to claim 1, wherein, The control circuit is provided with a display screen (8) and a main control board (9) electrically connected with the display screen (8), a flow sensor for monitoring the water flow and a water temperature sensor for monitoring the temperature of the cooling water are arranged in the circulating water pipeline (7), and the flow sensor and the water temperature sensor are electrically connected with the main control board (9), so that the display screen (8) displays the real-time temperature and flow of the cooling water.

5. An operating system for controlling the output of a laser according to claim 4, wherein, The working part of the laser (1) comprises a closed shell, an optical path adjusting unit (1a), a seed laser unit (1b) and a condensing cavity component (1c) arranged in the shell, the shell has a water inlet end and a water outlet end connected with the circulating water pipeline (7), and a temperature sensor is arranged in the shell of the working part of the laser (1), and the temperature sensor is electrically connected with the main control board (9).

6. An operating system for controlling the output of a laser according to any one of claims 1 to 5, wherein, The working part of the laser (1) is arranged as an upper structure of the laser (1), and the control circuit and the cooling water circuit are arranged as a lower structure of the laser (1), and the upper structure and the lower structure of the laser (1) are separated from each other.

7. An operation method of an operation system for controlling a laser output based on the control method according to claim 5, characterized by, The method comprises the following steps: S1, starting the equipment, initializing the control circuit, starting the cooling water circuit, starting the water pump (4), the red copper radiator (5) and the refrigerator (6) to work at the same time, and making the cooling water flow in the circulating water pipeline (7); S2, when the laser (1) is working, the temperature in the laser (1) rises, the flowing cooling water exchanges heat with the heating elements of the laser (1) to take away the heat, so that the temperature of the condensing cavity component (1c) is maintained at 25℃, and the working efficiency of the laser (1) is maintained high; When the water temperature sensor monitors that the water temperature of the cooling water is higher than 27℃, the red copper radiator (5) is in the starting state of heat dissipation.

8. The method of claim 7, wherein the laser output is controlled by the laser output control signal. When the water temperature sensor monitors that the water temperature of the cooling water is higher than 25℃, the refrigerator (6) is in the starting state to refrigerate the cooling water, so that the water temperature of the cooling water decreases.

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